refs #3565 : change blubber plugin for customized streams

git-svn-id: svn://develop.studip.de/studip/trunk@26880 c5b85792-5220-0410-ad23-ed5b6b8ad999
refs #3565 : change blubber plugin for customized streams

git-svn-id: svn://develop.studip.de/studip/trunk@26881 c5b85792-5220-0410-ad23-ed5b6b8ad999